Hour rooms in Vienna usually last for several hours.

Four hours. According to Vienna hotel regulations, hourly rooms are charged by the hour, from 8 am to 8 pm, for a total of 4 hours. General hourly rooms are suitable for short breaks. For example, if you have to wait for a bus for a long time during your trip, but you can't meet the requirement of staying overnight, you can open an hourly room, which is cheaper and saves more time. So the hourly room in Vienna is usually four hours.